html,body{ 
    margin: 0;
    height: 100%;
    background: #d0e7f9;
}

.main{
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    box-sizing: border-box;
    max-width: 812px;
    border-radius: 10px;
    margin: auto;
    box-shadow: 0 0 0 5px #da4a4a,0 0 0 20px #474f51;
    background: #da4a4a;
    height: 100%;
    max-height: 414px;
    padding: 10px;
}
.panel{
    position: relative;
    height: 100%;
    padding: 20px;
    box-sizing: border-box;
    background: #f8f1d7;
    border-radius: 15px;
    display: flex;
    flex-direction: row;
    box-shadow: inset 8px 8px #fffef7;
}
.function-area{
    flex: 1;
    display: flex;
    padding: 0 20px;
    justify-content: center;
    flex-direction: column;
}
.controller-area{
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: row;
}
.action-area{
    display: flex;
    flex-direction: row;
}
.controller{
    position: relative;
    width: 140px;
    height: 140px;
    align-self: flex-end;
    filter: drop-shadow(5px 5px 0px rgba(255,255,255,.8));
}
.controller button{
    position: absolute;
    z-index: 1;
    border: 8px solid #474f51;
    background: #857b7a;
    color: transparent;
    border-radius: 15px;
    box-sizing: border-box;
    outline: 0;
    width: 56px;
    height: 56px;
    left: 50%;
    top: 50%;
    user-select: none;
    transform: translate(-50%,-50%);
}
.controller::before{
    content: '';
    position: absolute;
    z-index: 0;
    pointer-events: none;
    box-sizing: border-box;
    left: 50%;
    top: 50%;
    width: 56px;
    height: 56px;
    background: #857b7a;
    transform: translate(-50%,-50%);
}
.controller::after{
    content: '';
    z-index: 2;
    position: absolute;
    pointer-events: none;
    box-sizing: border-box;
    width: 42px;
    height: 42px;
    border: 8px solid #474f51;
    border-radius: 50%;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    box-shadow:inset 0px 8px 0 0px #736a6d,inset 0px -8px 0 0px rgba(255,255,255,.4);
}
button.button-up{
    top: 0;
    transform: translate(-50%,0);
    border-bottom: 0;
    height: 50px;
    border-bottom-right-radius:0;
    border-bottom-left-radius:0;
    box-shadow:inset 0px 8px 0 0px rgba(255,255,255,.5);
}
button.button-right{
    left: auto;
    right: 0;
    transform: translate(0,-50%);
    border-left: 0;
    width: 50px;
    border-bottom-left-radius:0;
    border-top-left-radius:0;
    box-shadow:inset 8px 0 0 0px #857b7a, inset 6px 6px 0 0px rgba(255,255,255,.4), inset 8px -8px 0 0px rgba(0,0,0,.1);
}
button.button-down{
    top: auto;
    transform: translate(-50%,0);
    bottom: 0;
    border-top: 0;
    height: 50px;
    border-top-right-radius:0;
    border-top-left-radius:0;
    box-shadow:inset 0px -8px 0 0px rgba(0,0,0,.1);
}
button.button-left{
    left: 0;
    transform: translate(0,-50%);
    border-right: 0;
    width: 50px;
    border-bottom-right-radius:0;
    border-top-right-radius:0;
    box-shadow:inset 0px 8px 0 0px rgba(255,255,255,.4), inset -8px 0px 0 0px #857b7a, inset -8px -8px 0 0px rgba(0,0,0,.1);
}
.function{
    display: flex;
    padding: 8px 15px;
    border-radius: 50px;
    align-self: center;
    background: #da4a4a;
    box-shadow: 5px 5px 0 rgba(255,255,255,.8);
}
.function button{
    user-select: none;
    margin: 10px;
    height: 24px;
    width: 60px;
    outline: 0;
    border: 8px solid #474f51;
    box-shadow: 0 0 0 8px rgba(255,255,255,.1),inset 4px 4px 0 0px rgba(255,255,255,.4) ;
    background: #857b7a;
    color: transparent;
    border-radius: 15px;
}
.action{
    display: flex;
    align-self: flex-end;
}
.action button{
    user-select: none;
    width: 56px;
    height: 56px;
    background: #857b7a;
    border-radius: 50%;
    outline: 0;
    color: transparent;
    border: 8px solid #474f51;
    box-shadow: 0 0 0 10px rgba(255,255,255,.8),inset 5px 8px 0 0px rgba(255,255,255,.4),inset -5px -8px 0 0px rgba(0,0,0,.1) ;
}
.action button:first-child{
    margin-right: 24px;
}
.sign{
    position: absolute;
    font-weight: bold;
    font-size: 20px;
    font-style: italic;
    height: 50px;
    right: 0;
    top: 0;
    background: #da4a4a;
    color: #f8f1d7;
    text-shadow: 0 -2px #fffef7;
    padding: 0 0 15px 15px;
    letter-spacing: 0.1em;
    border-bottom-left-radius: 15px;
    filter:drop-shadow(0 8px #fffef7)
}
.sign::before{
    content: '';
    position: absolute;
    width: 15px;
    height: 15px;
    left: -15px;
    top: 0;
    background: radial-gradient( circle at left bottom,transparent 14px, #da4a4a 15px);
}
.sign::after{
    content: '';
    position: absolute;
    width: 15px;
    height: 15px;
    bottom: -15px;
    right: 0;
    background: radial-gradient( circle at left bottom,transparent 14px, #da4a4a 15px);
}
.joy{
    position: absolute;
    left: 0;
    top: 0;
    width: 50px;
    height: 50px;
    background: #857b7a;
    border-radius: 5px;
    text-align: center;
    line-height: 50px;
    color: #f8f1d7;
    font-weight: bold;
    font-size: 30px;
}
.screen{
    flex:1;
    display: flex;
    width: 100%;
    transition: .3s;
    background: #000;
    margin-bottom: 20px;
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.screen canvas{
    max-width: 100%;
    max-height: 100%;
}



@media screen and (orientation: portrait) {
/*竖屏 css*/
    .main{
        max-height:100%;
    }
    .function-area{
        position: absolute;
        left: 0;
        right: 0;
        top: 85px;
        bottom: 100px;
        padding-bottom: 80px;
    }
    .function{
        position: absolute;
        bottom: 0;
        align-self: flex-end;
        transform: translateX(20px);
        padding: 8px 10px;
        border-radius: 50px 0 0 50px;
        box-shadow: 0px 5px 0 rgba(255,255,255,.8);
    }
    .function::before{
        content: '';
        position: absolute;
        width: 15px;
        height: 15px;
        right: 0;
        top: -15px;
        background: radial-gradient( circle at left top,transparent 14px, #da4a4a 15px);
    }
    .function::after{
        content: '';
        position: absolute;
        width: 15px;
        height: 15px;
        bottom: -15px;
        right: 0;
        background: radial-gradient( circle at left bottom,transparent 14px, #da4a4a 15px);
    }
    .screen{
        margin-bottom: 0;
        max-height: 300px;
    }
    .function button{
        width: 56px;
        margin: 10px;
    }
    .action-area{
        flex: 1;
        justify-content: flex-end;
    }
    .action button:first-child{
        margin-right: 20px
    }
 

} 
@media screen and (orientation: landscape) {
/*横屏 css*/
}